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1、Unit5 語法專項課件（過去進行時）初中英語人教版八年級下冊 語 法 透 析考點大觀易錯辨析通關(guān)訓練 考點大觀易錯辨析通關(guān)訓練過去進行時定義過去進行時表示過去某一時刻或某一段時間內(nèi)正在進行或發(fā)生的動作。 考點大觀易錯辨析通關(guān)訓練過去進行時的結(jié)構(gòu)否定形式問句 形式was/were + not + doing Was/Were+主語+doing was/were + doing He was sleeping at that time.He wasnt sleeping at that time.Was he sleeping at that time?肯定形式 考點大觀易錯辨析通關(guān)訓練過去進行
2、時標志詞then, at that time, this time yesterday, at 5 oclock last night, all night, all the morning, from 7:00 to 9:00 yesterdayThey were having a class this time yesterday.I was drawing a horse when the teacher came in. 考點大觀易錯辨析通關(guān)訓練動名詞變化規(guī)則口訣規(guī)則例子直1. 一般情況下，直接在動詞后加-ing。play playing去2. 動詞以不發(fā)音的-e結(jié)尾，要去-e加-in
3、g。take taking雙3.重讀閉音節(jié)的動詞，要雙寫詞尾字母，再加-ing。cut cutting變4. 以-ie結(jié)尾的動詞，把ie變成y再加-ing。lie - lying 考點大觀易錯辨析通關(guān)訓練易錯點1when的用法when和while引導時間狀語從句1. 狀語從句表示短時間的動作，主句常用進行時態(tài)或完成時態(tài)。When I came in, he was reading the newspaper.非延續(xù)性動詞：come, go, leave, arrive, meet, die等。 考點大觀易錯辨析通關(guān)訓練易錯點1when的用法when和while引導時間狀語從句2. 狀語從句表示
4、長時間的動作或狀態(tài)，主句常用進行時態(tài)。When she was making a call, I was writing a letter. 考點大觀易錯辨析通關(guān)訓練易錯點1when的用法when和while引導時間狀語從句3. 表示突然發(fā)生某事，意思是“正在時突然”，主句常用過去進行時，when從句常用一般過去時。I was just coming along to see you when I ran into Wilson. 考點大觀易錯辨析通關(guān)訓練易錯點1while的用法when和while引導時間狀語從句1. 主句和從句都用一般過去時。She listened carefully w
5、hile he read.延續(xù)性動詞：read, study, sleep, write, listen, watch等。 考點大觀易錯辨析通關(guān)訓練易錯點1while的用法when和while引導時間狀語從句2. 從句用過去進行時，主句用一般過去時。While I was watching TV, Tom came in. 考點大觀易錯辨析通關(guān)訓練易錯點1while的用法when和while引導時間狀語從句3. 主句和從句都用過去進行時。While I was watching TV, she was doing some cleaning. 考點大觀易錯辨析通關(guān)訓練易錯點2用法不同過去進行時
6、和一般過去時的區(qū)別過去進行時一般過去時1. 表示動作在持續(xù)或未完成。1. 表示某一動作已經(jīng)完成。2. 表示動作反復地進行。2. 表示只做一次動作。 考點大觀易錯辨析通關(guān)訓練易錯點2用法不同過去進行時和一般過去時的區(qū)別She was writing a letter to her friend at eight last night.She wrote a letter to her friend last night. (信不一定寫完) (信寫完了) She waved to me. She was waving to me. （揮了揮手）（反復揮手） 考點大觀易錯辨析通關(guān)訓練易錯點2標志詞不
7、同過去進行時和一般過去時的區(qū)別過去進行時一般過去時過去時間點：at that time, this time yesterday, at 7 oclock yesterday evening等。過去時間點：just now, yesterday, this morning, three years ago等。過去時間段：from six to nine yesterday, from morning till night, all those days等。過去時間段：in the past, in + 過去的年份, last week, once upon a time等。 考點大觀易錯辨析通
8、關(guān)訓練易錯點2過去進行時和一般過去時的區(qū)別We were having supper at this time yesterday.It was raining all those days.I was reading English while my mother was cooking breakfast.（過去進行時） 考點大觀易錯辨析通關(guān)訓練易錯點2過去進行時和一般過去時的區(qū)別I lived in Beijing three years ago.The first Olympic Games happened in 1896.Anny used to be short, but she
9、 becomes taller now.（一般過去時） 考點大觀易錯辨析通關(guān)訓練解 析【典例1】Little Tom _ computer games when his mother got home. A. is playing B. plays C. was playing D. playing考查時態(tài)。句意：當媽媽到家的時候，小湯姆正在 玩電腦游戲。when引導時間狀語從句，主句多用進行時，時間發(fā)生在過去，故用過去進行時。 考點大觀易錯辨析通關(guān)訓練解 析【典例2】 Turn off the water while you _ your teeth or washing your hand
10、s. A. were brushing B. brush C. are brushing D. brushed考查時態(tài)。句意：當你刷牙或洗手的時候，請關(guān)掉水 龍頭。while引導時間狀語從句，時態(tài)保持一致，brushing與washing并列；習慣的動作，故選現(xiàn)在進行時。 考點大觀易錯辨析通關(guān)訓練解 析【典例3】I called you at 8:00 yesterday evening, but no one answered. Sorry, I _ clothes at that time. A. wash B. washed D. am washing D. was washing考查時態(tài)。句意：昨晚八點我打電話給你，但是沒有人接。不好意思，那個時候我正在洗衣服。at that time為過去進行時標志詞，選用was/were doing。
Unit5 語法專項課件 過去進行時
